This is a dealer-installed Volvo filter - Mahle I believe (made in Austria is on it though not visible).
Installed 6,500 miles, castrol 5w-30 synthetic (dealer installed in 11/2016)
2004 S60 2.5t awd, 133k mi.
There was a tiny bit of thickened oil in the bottom of the filter housing (it sits inverted so things accumulate there). No carbon found elsewhere.
Volvo has a peculiar PCV system with a large plastic box along the block. Oil coking tends to clog it over time and pressurize the engine, driving oil leaks. Cleaning/replacing it is a hassle as it's beneath the intake manifold and the fuel rail has to come off, also. Working on them throws carbon debris everywhere - into hoses, the block, pan.
When I bought this car a few weeks ago I spied that the intake manifold gasket was new and I could peer between the intake runners and see the box was new-ish and not original. Nice sign. I believe the car sat about 2.5+ years until this September, thus the 6,500 miles since the last oil change 4 years ago.
I replaced it with a Bosch for now (will get a Fram Ultra or equivalent later), Mobil 1 10w30 HM, and 6oz. of Lubegard Biotech. I will do a UOA at 5k miles to see how it's holding up and to pick an ongoing-OCI for the car. I'll probably pull the filter out in 1k miles to see if it's still catching debris.
Installed 6,500 miles, castrol 5w-30 synthetic (dealer installed in 11/2016)
2004 S60 2.5t awd, 133k mi.
There was a tiny bit of thickened oil in the bottom of the filter housing (it sits inverted so things accumulate there). No carbon found elsewhere.
Volvo has a peculiar PCV system with a large plastic box along the block. Oil coking tends to clog it over time and pressurize the engine, driving oil leaks. Cleaning/replacing it is a hassle as it's beneath the intake manifold and the fuel rail has to come off, also. Working on them throws carbon debris everywhere - into hoses, the block, pan.
When I bought this car a few weeks ago I spied that the intake manifold gasket was new and I could peer between the intake runners and see the box was new-ish and not original. Nice sign. I believe the car sat about 2.5+ years until this September, thus the 6,500 miles since the last oil change 4 years ago.
I replaced it with a Bosch for now (will get a Fram Ultra or equivalent later), Mobil 1 10w30 HM, and 6oz. of Lubegard Biotech. I will do a UOA at 5k miles to see how it's holding up and to pick an ongoing-OCI for the car. I'll probably pull the filter out in 1k miles to see if it's still catching debris.
